Snorkel TB66J CE - Manual (Page 36)

Chapter 7 – Prestart Inspection
32 TB60/66J – 0084030EE
Figure 7.14 – Bottom of Main Boom at Tip End
Figure 7.15 – Top of Main Boom at Base End
Also inspect the wire ropes just inside the base end of
the main boom (refer to Figure 7.6).
Figure 7.16 – Base End of Main Boom
Fasteners
Visually inspect all fasteners to see that none are miss-
ing or loose.
Pay particular attention to all of the bolts, nuts, rollpins,
collars, and snap rings that connect the booms and
cylinders. They should all be present, tight and not
damaged in any way.
Inspect the covers while operating the machine to en-
sure they are securely fastened and completely cover
the cylinder rod. Make sure there are no holes in the
covers.
Structures
Visually inspect all weldments and related components.
It is important to inspect the fasteners that connect the
components.
Weldments
Visually inspect all weldments for abnormal wear,
abrasion, or deformation that could cause interference
between moving parts.
Inspect the welds on the structural components. Pay
particular attention to boom welds. The area to be
inspected should be clean and free of dirt and grease.
Look for visible cracks in the weld and at the weld to par-
ent material joint. A bright light may be used to provide
adequate visibility of the inspection area.
Slide Pads
The main boom has slide pads (refer to Figure 7.3)
between the boom sections.
Figure 7.13 – Boom Sections
Use the lower controls to raise the main boom to hori-
zontal. Extend the tip boom about 30 cm (′). Visually
inspect the slide pads to make sure they are in place
and are not obviously loose.
Inspect the surface where the pads contact the inter-
mediate and tip booms. The paint must be in place with
no signs of bare metal.
Wire Ropes
Visually inspect the wire ropes where they are connected
to the outside of the main boom. There is a wire rope
connection on the bottom of the tip end of the main boom
(refer to Figure 7.4) and also one on the top of the base
end of the boom (refer to Figure 7.5).
Slide Pads
Slide Pads